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building interesting things!

Sagar Jauhari sagarjauhari

building interesting things!
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StevenACoffman /
Last active Dec 16, 2020
Fluentd Fluent-bit FileBeat memory and cpu resources

Fluent-bit rocks

A short survey of log collection options and why you picked the wrong one. 😜

Who am I? Where am I from?

I'm Steve Coffman and I work at Ithaka. We do JStor (academic journals) and other stuff. How big is it?

Number what it means
101,332,633 unique visitors in 2017
View Setup OSRM route server for North America on

OSRM North America route server on EC2


OSRM route server is an extremely useful tool for getting the driving distance/time through multiple locations. The route server requires data that has to be downloaded and processsed before it can be used to serve routes from.

Processing OSRM data for large region like North America can be a real challenge due to memory and disk size requirements. It's also really time consuming. If you cut and try from scratch, you will repeatedly run into some constraints and fail after hours of running.

The following are summary notes from trying this with eventual success.

angelamancini / quiver-to-evernote.rb
Created May 20, 2017
Converts Quiver notebook exports to Evernote *.enex files. Only tested with text and code cells. This *was not tested* with any other cell types.
View quiver-to-evernote.rb
# Before running this script, go to Quiver and export all notebooks into json/quiver format
# Place them in a folder called `exports` in the same directory as this script.
# In terminal, run `ruby quiver-to-evernote.rb`
# Check for presence of required gems.
# If not present, install the gems
["rubygems", "sanitize"].each do |gem|
gem "#{gem}"
rescue Gem::LoadError
`gem install #{gem}`
john2x /
Last active Jan 6, 2021
Clojure Destructuring Tutorial and Cheat Sheet

Clojure Destructuring Tutorial and Cheat Sheet

(Related blog post)

Simply put, destructuring in Clojure is a way extract values from a datastructure and bind them to symbols, without having to explicitly traverse the datstructure. It allows for elegant and concise Clojure code.

Vectors and Sequences

The MIT License (MIT)
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
jwalton /
Last active Sep 18, 2020
Rickshaw Graph is a drop in replacement for Dashing's graph

Graphing Widget

The graphing widget shows graphs using the Rickshaw graphing library. The names of data fields should be (vaguely) familiar if you've used Rickshaw before.

It's recommended that you replace the /assets/javascripts/rickshaw.min.js from your dashboard with the latest from here.

Supported HTML data fields

phette23 /
Last active Jan 14, 2021
Set the iTerm tab title to the current directory, not full path.
# put this in your .bash_profile
if [ $ITERM_SESSION_ID ]; then
export PROMPT_COMMAND='echo -ne "\033];${PWD##*/}\007"; ':"$PROMPT_COMMAND";
# Piece-by-Piece Explanation:
# the if condition makes sure we only screw with $PROMPT_COMMAND if we're in an iTerm environment
# iTerm happens to give each session a unique $ITERM_SESSION_ID we can use, $ITERM_PROFILE is an option too
# the $PROMPT_COMMAND environment variable is executed every time a command is run
# see:
josephmosby / gist:4242213
Created Dec 8, 2012
Week One of Ruby on Rails: Step Backwards
View gist:4242213

I am taking a step back in my Ruby on Rails journey, as it seems that my initial goals may have been a bit too ambitious.

As I said in a previous post, this is not my first foray into web applications. I've been working with Python and its associated frameworks for some time. When I was asked by a friend to work with Ruby, I thought that there would be a fair amount of similarities between Rails and Django given the structural similarities between Ruby and Python. I could not have been more wrong.

The Ruby and Python communities have taken their languages in completely different directions, and that's just fine. Ruby has no Benevolent Dictator for Life like Guido van Rossum, and 37signals has rejected any implications that their organization can be the sole deciders for Rails. That leaves a community free to evolve however it chooses to do so. There are pros and cons to this. Ruby (and consequently, Rails) has the ability to

larsks /
Created Nov 6, 2012
Convert Blogger posts to Markdown for use with
import os
import sys
import argparse
import iso8601
import re
import subprocess
import logging
import json
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